> ## Documentation Index
> Fetch the complete documentation index at: https://docs.guile.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Invalid Refresh Token

> The refresh token is invalid or expired

## Cause

The refresh token is missing, revoked, or otherwise unusable. Guile did not issue
a new access token.

## Fix

Send the user through sign-in again. OTP or passkey via
[create an authentication challenge](/api-reference/challenges/create-an-authentication-challenge): to obtain new access and refresh tokens. Do not retry refresh with this token.

## Retry safety

Not retryable

## Raised by

These operations can return this problem:

* [Exchange an offline refresh token](/api-reference/token-management/exchange-an-offline-refresh-token)

## Example

```json theme={null}
{
 "type": "https://docs.guile.app/problems/invalidRefreshToken",
 "title": "Invalid Refresh Token",
 "status": 422,
 "detail": "The refresh token is missing, revoked, or otherwise unusable. Guile did not issue a new access token."
}
```